[javascript mode] Also look at following text to determine continued statement

Issue #3015

mode/javascript/javascript.js

@@ -600,6 +600,12 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
     if (type == "if") return cont(expression, comprehension);
   }
 
+  function isContinuedStatement(state, textAfter) {
+    return state.lastType == "operator" || state.lastType == "," ||
+      isOperatorChar.test(textAfter.charAt(0)) ||
+      /[,.]/.test(textAfter.charAt(0));
+  }
+
   // Interface
 
   return {
@@ -651,7 +657,7 @@ CodeMirror.defineMode("javascript", function(config, parserConfig) {
       else if (type == "form" && firstChar == "{") return lexical.indented;
       else if (type == "form") return lexical.indented + indentUnit;
       else if (type == "stat")
-        return lexical.indented + (state.lastType == "operator" || state.lastType == "," ? statementIndent || indentUnit : 0);
+        return lexical.indented + (isContinuedStatement(state, textAfter) ? statementIndent || indentUnit : 0);
       else if (lexical.info == "switch" && !closing && parserConfig.doubleIndentSwitch != false)
         return lexical.indented + (/^(?:case|default)\b/.test(textAfter) ? indentUnit : 2 * indentUnit);
       else if (lexical.align) return lexical.column + (closing ? 0 : 1);